für 26.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Este trabajo tiene por finalidad solucionar un problema crítico de la fabricación y producción de todo tipo de materia prima convertilo en producto terminado ya sean empresas: textiles, de plásticos, mecánicas, químicas, de pinturas, de electrodomésticos, fabricación de autopartes, de muebles, etc. Todas estas empresas generan a través de su funcionamiento Ruido Industrial, en la medida que estén cerca de las poblaciones, esto crea un malestar en el resto de los vecinos de esa comunidad. En este libro propongo una solución para las empresas, mediante cálculos y posteriormente seleccionando los aislantes acústicos para llegar a la solución definitiva de un problema muy complicado de mitigar. El Ruido contamina y ocasiona molestias a las ciudades y comunidades, es un problema en constante crecimiento y que lamentablemente se esta agudizando cada vez mas. Con este libro intento plantear una solución al ruido industrial. ····· 1036190633
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray En el presente trabajo, se estudiaron distintos procesos en la industria petroquímica: Planta de Recuperación de Azufre 2 y 3, y la Estación Terminal Jose, con la finalidad de proporcionarles soluciones de regulación de procesos mediante el uso de válvulas de control. El primer caso trató de un proceso de endulzamiento de gas con amina que presenta diferentes exigencias como cavitación, súper cavitación, flujos bifásicos y corrosivos. El segundo, corresponde a una estación de regulación de presión operada con un sistema Activo/Monitor, donde los altos diferenciales de presión generan elevados niveles de ruido y como consecuencia vibraciones que deterioran los equipos el fluido a controlar es un gas natural con residuos de azufre, que obturan los platos atenuadores actualmente instalados en las válvulas de control, forzando a realizar mantenimientos complejos trimestralmente. Los conceptos, ecuaciones, metodología e imágenes presentes en el libro orientan al lector en el dimensionamiento y selección de válvulas de control. ····· 1036190351
für 62.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Durante los últimos años, la alta prevalencia de Infección Respiratoria Aguda (I.R.A) en los menores de 14 años que viven en la localidad de Puente Aranda de Bogotá D.C, se ha asociado con las altas concentraciones de PM10 presentes en la zona. Por ello se realizó una caracterización microbiológica del material particulado en la localidad, empleando el método succión para la recolección de muestras bacteriológicas, utilizando el equipo Merck Air Sampler (MAS-100). Se identificaron dentro del material particulado, los posibles patógenos oportunistas que viajan en la corriente de aire, los cuales aprovechando los efectos de irritación y laceración de los epitelios causados por las partículas, sumados a la colmatación de la red de cilios que protegen el sistema respiratorio, brindan condiciones apropiadas para que el microorganismo que llega, pueda tener una mayor probabilidad de generar algún problema respiratorio, siempre teniendo en cuenta que la salud del huésped será uno de los factores condicionantes para la ocurrencia o no de la infección. ····· 1036190251
für 62.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La condición eléctrica del cuerpo humano es hoy conocida y aceptada en muchas de sus aplicaciones. Las señales eléctricas son consideradas fundamentales para diagnóstico de patologías cardíacas, cerebrales y musculares, además del uso del biomagnétismo en técnicas como las imágenes de resonancia magnética y el uso de nanopartículas magnéticas como marcadores para diagnóstico y tratamiento en ingeniería de tejidos y administración de fármacos. En este manuscrito se presenta un poco de historia sobre el nacimiento y renacimiento de la electricidad y el magnetismo como una aplicación en el área médica. Los fundamentos teóricos que soportan el porqué de la interacción entre el electromagnetismo y el tejido y su dificultad a la hora de predecir dicha interacción. Se presentan las características eléctricas de los tejidos reflejadas en sus propiedades y cambios ante diferentes condiciones de frecuencia, temperatura, edad, patologías, etc. Y finalmente se recopilan estudios de la aplicación de electricidad y magnetismo en el diagnóstico y tratamiento del tejido óseo y la piel, que no son aun completamente aceptados pero que evidencian y motivan a investigar en el área del bioelectromagnetismo. ····· 1036190033
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Tesis de grado dirigida a diseñar un Sistema de Seguridad y Salud Ocupacional para Industrias de Aceites S.A. basado en normas internacionales de Seguridad y Salud Ocupacional y leyes vigentes en el tema. Los Recursos Humanos constituyen la más importante fuente de desarrollo de una empresa y un país es por este motivo que el velar por la integridad y salud del mismo se torna indispensable y obligatorio con un sistema estructurado de Seguridad y Salud Ocupacional. ····· 1036189876
für 88.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray En estos últimos 10 años, con la globalización de mercados y exigencias externas, una compañía que se precie, para poder ser rentable, debe ser capaz de gestionar el impacto que genera sobre su entorno, ya sea de tipo económico, social, ambiental o asociado al producto o servicio que comercializa. Esta filosofía de trabajo debe arraigarse a sus valores y cultura empresarial, para poder obtener resultados sostenibles y ganarse además la confianza de sus grupos de interés, especialmente la de los clientes y accionistas. Para poder cuantificar de manera objetiva dichos impactos, es necesario disponer de sistemas que ayuden a la alta dirección a medir y muestren la evolución del comportamiento de la compañía de manera objetiva, permitiendo detectar las posibles áreas de mejora, tomar decisiones al respecto y poner en marcha una serie de planes de acción para minimizar los gaps detectados. ····· 1036189820
für 80.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El objetivo fundamental de esta tesis doctoral es analizar y posteriormente cuantificar, los riesgos que tiene la costa Española Mediterránea frente a un derrame procedente del tráfico marítimo de hidrocarburos. Para ello, se considerarán como variables, entre otras, las peculiaridades geográficas, climáticas o de densidad de tráfico que permitan alimentar una función aleatoria. Esta función objetiva permitirá identificar los puntos de la costa con mayor probabilidad de riesgo y, posteriormente, considerando los recursos que se disponen de lucha contra la contaminación, presentar una propuesta de distribución y gestión de los mismos. Se pretende evidenciar y estudiar dónde pueden estar los supuestos Puntos Negros en el Mediterráneo Occidental y, en especial en la parte del mismo que afecta a esta tesis, con máximo riesgo de vertido de hidrocarburos y las potenciales mareas negras que se generan de ellos. Todo lo arriba expuesto, nos debe llevar a la conclusión final de poder valorar si estamos preparados en el litoral español, para afrontar una marea negra procedente de los buques, de un derrame de hidrocarburos accidental en mar abierto y del tráfico de hidrocarburos. ····· 1036189676
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Debido al desarrollo creciente de la Ciudad de Bogotá y a su incremento de población, se han construido diversos sistemas de transporte. Estos sistemas pueden generar un impacto negativo en la población tanto por problemas de salud como por los daños que pueden inducir sobre edificaciones existentes. Las vibraciones causadas por el tráfico vehicular pueden generar daños en las edificaciones cercanas y molestias a las personas. Estos efectos pueden ser importantes en función del nivel de amplitud de las vibraciones, la cual depende, entre otros aspectos, de las características particulares de los suelos de soporte de la Ciudad. En el caso de las edificaciones, la intensidad del daño está relacionada con la edad de la estructura, con el tipo de material, con el estado actual de los elementos estructurales y también con las cargas que han afectado la edificación en el pasado (por ejemplo los sismos), Las vibraciones debidas al paso de vehículos incrementan el daño existente y puede inducir agrietamientos, asentamientos y en casos extremos pueden generarse fenómenos de resonancia en la edificación. Las vibraciones por tráfico vehicular también pueden afectar equipos sensibles. ····· 1036189559
für 80.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El modelado de la anisotropía presente en los materiales y su evolución con las deformaciones es de gran interés en procesos de conformado de metales, de recuperación elástica y, en general, en procesos que impliquen deformación plástica del material. Por ejemplo, las chapas procedentes de laminación en frío, presentan una anisotropía inicial que tiene su origen en el proceso de fabricación. En etapas posteriores, esta anisotropía inicial puede dar lugar a diferentes flujos de tensión respecto de la dirección de laminado, ocasionando imperfecciones en las piezas resultantes de los procesos de fabricación ( orejeado de los bordes, errores en la fuerza aplicada para obtener un desplazamiento determinado, diferente recuperación elástica según la dirección, etc). El objetivo de este trabajo es el desarrollo de modelos y algoritmos numéricos que simulen el comportamiento del material bajo estas condiciones en el contexto de programas de elementos finitos, dando como resultado predicciones más precisas de los procesos de conformado y deformación plástica en general. ····· 1036189413
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Urbanization such as population growth, industrial development, solid waste, and households lead to different behaviors of water quality parameters in nature. By increasing urban growth, both surface and ground water quality are contaminated in different ways. To investigate the water quality situation, different impacts due to population growth, land use change, industrial expansion and projected solid waste condition were considered for the Savar Pourashava. Due to urbanization, there are massive impacts on localities such as population growth, land use change, more solid waste generation, drainage networks etc. The river has become a dumping ground for all kinds of solids, liquids and chemical wastes by industry. As a result the quality of the water is being deteriorated day by day. The quality of water is degrading in a large scale. Now the DO of canal, pond, drain fall water and tube well water are 2.3, 0.2, 0.1 and 3.4 respectively. With the analysis of the problems, it provided innovative insight and recommendation in order to reduce the existing problems as well as guidelines for future urban development and to ensure a safe and better water quality in in Savar Pourashava. ····· 1036189345
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The importance of the integration between the production planning and operations scheduling forces by it`s direct effect on the overall performance of the system in terms of quality of services to the customer and cost to the organization. The main objective of the proposed work is constructing an Advanced Production Planning and Scheduling (APPS) model, in addition to applying the developed model to an industrial case study. The proposed research aims at studying a selected case of the batch process industry. Batch operations are economically desirable, especially when small or large amounts of products are made using similar production paths. A batch process is frequently found in the fast moving consumer goods industry, in food processing, chemical manufacturing, oil refining, and in the pharmaceutical industries. The APPS model was implemented in a real world case study for an industrial company that supplies many fast moving consumer goods in Egypt. Results illustrate the contribution of the proposed model and its efficient use in the design of production planning and scheduling decisions. ····· 1036189239
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Nanofiltration (NF) membranes have been employed in pretreatment unit operations in desalination processes. In order to predict NF performance, a systematic study on the filtration performance of NF membranes against seawater is required. In this work, NF membranes have been studied in details to check their filtration performance with salt mixtures at salinity levels similar to that of seawater. The membranes were characterized using Atomic Force Microscopy. The Spigler-Kedem model (SKM), artificial neural network (ANN), and modified Donnan Steric Pore Model (DSPM) were used to analyse the experimental data. The SKM model was used to fit the experimental data of rejection with the permeate flux in order to determine the reflection coefficient and the solute permeability. The ANN model was used to predict the rejection versus pressure and the rejection versus permeate flux. The DSPM model was modified by the inclusion of the dielectric constant term and the effect of osmotic pressure for solutions with higher concentration compared to those reported previously. Finally, the Verbene cost model was employed to check the performance and economics of NF for desalination applications. ····· 1036189187
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Demand for biosensor research applications is growing steadily. According to a new report by Frost & Sullivan, the biosensor market is expected to reach $14.42 billion by 2016. Clinical diagnostic applications continue to be the largest market for biosensors, and this demand is likely to continue through 2016 and beyond. Biosensor technology for use in clinical diagnostics, however, requires translational research that moves bench science and theoretical knowledge toward marketable products. Despite the high volume of academic research to date, only a handful of biomedical devices have become viable commercial applications. Academic research must increase its focus on practical uses for biosensors. This book is an example of this increased focus, and discusses work to advance microfluidic-based protein biosensor technologies for practical use in clinical diagnostics. ····· 1036189035
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The digital implementation of the controllers is mainly preferred from re-programmability point of view. Many important control problems can be effectively solved using a digital architecture in conjunction with analog-digital and digital-analog conversion. Digital solutions offer very attractive advantages as promise to shorten design cycles and provide the freedom to reprogram in simple ways. However, depending on the complexity of the plant digital implementation may be demanding due to the high computational power requirement to run in real time. The necessity for the acquisition of the analog signals on the other hand compels extra conditions on the system. This work aims to develop an analog motion controller for single input single output plants of complex nature. As the control algorithm, Sliding Mode Control (SMC), the well known robust nonlinear controller is selected as a design framework. SMC is one of the effective nonlinear robust control approaches that provide system invariance to uncertainties once the sliding mode motion is enforced in the system. ····· 1036188937
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In recent years, sensitive industrial and critical commercial loads have been increasing amount of focus on power quality due to various types of power quality (PQ) problems. To overcome such problems, utility companies have made efforts to improve the quality and reliability of their electric power to the consumers. Traditionally for problems originated on the utility side, the approach has been to work on the customer side to desensitize critical loads while cleaning up the circuit on the utility side. However, with the development of high power semiconductor devices, it has become possible to design various custom power devices which can provide credible solutions to power quality problems on the distribution networks. This book explained the modelling and simulations of custom power devices, namely, the distribution static compensator (D-STATCOM), dynamic voltage restorer (DVR), solid-state transfer switch (SSTS) and solid-state fault current limiter (SSFCL). New control schemes have been implemented to evaluate the performance of these custom power devices in mitigating PQ problems. The developed simulation models will be useful for further PQ studies in a distribution system. ····· 1036188867
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Two-dimensional recursive digital filters are widely used in signal processing and image processing, as well as divers communication systems. The main objective of this book has been to propose a new technique of designing 2-D recursive digital filters from an analog Bridged-T network. Starting from transfer function of a Bridged-T network in the analog domain which is VSHP, 2-D recursive digital filters can be obtained through the application of the double generalized bilinear transformations with the coefficients in their specified ranges. The impedance values of the transfer function of the Bridged-T network are obtained with compare to the fourth order Butterworth polynomial. For different impedance values of the Bridged-T network we get different types of filter output - all pass filter, band pass filter, band stop filter and low pass filter. The manner how each coefficient of generalized bilinear transformation affects each kind of 2-D recursive digital filter is investigated in details. ····· 1036188725
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Flow field and acoustic characteristics of compressible vortex ring evolution and its interaction with wall have been investigated for Mach number varying from 1.3 to 1.85 using high speed smoke visualizations and microphone. Importance of vortex ring study, classifications, generation mechanism, parameters that characterize its evolution and time line of vortex rings research since its discovery are discussed in Chap. 1. Shock tube design and theory of shock tube flow with the history and applications of shock tube are discussed in Chap. 2 and appendix A. The spatial and angular variations of incident shock diffracted at the shock tube exit are also studied using hot wire anemometer. The effect of driver section length, its pressure, and various driver section gases on shock strength and uniform flow time is discussed using method of characteristics (MOC) technique. Evolution of primary and counter rotating vortex rings (CRVR) are studied in chap. 3 and 4. Vortex ring diameter increases rapidly and translational velocity decreases during the formation and evolution of CRVR. The shock and wall interaction of vortex ring are discussed in Chap. 5. ····· 1036188624
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Perception of pain is multi-dimensional, comprising three major psychological dimensions: sensory-discriminative, motivational-affective and cognitive-evaluative.The pain experience and subjective assessment of pain varies greatly among people.In psychological studies, behavioral measures are gathered by asking the patient or subject to rate their feelings based on a specific scale. This approach is useful in the clinical setting to assess a patient s perceived amount of pain. However, behavioral measures do not point to the specific brain areas involved in cognitive or affective phenomenon during distress or injury. Hence, several researchers have taken the progressive step of combining behavioral measures with the spatio-temporal aspects of brain activity available through neuroimaging. Near Infra-Red Spectroscopy (NIRS) is a promising technology as it provides several advantages such as non-invasiveness, inherently non-ionizing radiation, patient-friendliness, portability and low cost electronics. The goal of this dissertation work is to develop novel methods to quantify neural correlates between pain perception and NIRS measurements acquired from the prefrontal cortical areas. ····· 1036188413
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray An important element of aerosol technology is the production of test aerosols for calibrating instruments, conducting aerosol research, developing and testing air cleaning and air sampling equipment. Monodisperse aerosols are used to calibrate particle size measuring instruments and to determine the effect of particle size on sampling devices. A monodisperse aerosol is usually defined as an aerosol that has a geometric deviation of less than 1.2. In aerosol research, monodisperse test aerosols of known size, shape and density are highly desirable because most aerosol properties depend strongly on particle size, which is best controlled by using monodisperse aerosols. Tests made with a series of monodisperse aerosols, each having a different particle size, permit the evaluation of the effect of particle size on aerosol properties or the performance of instruments like impactor. Test aerosols also used for various types of inhalation studies like animal exposure to toxic substances, respiratory deposition in humans or animals and the administration of therapeutic aerosols. ····· 1036188219
····· lezzter Preis 79.00€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Computational fluid dynamics (CFD) is a tool used to simulate fluid flow and heat transfer problems, using numerical solutions to the equations describing such transport phenomena, for example the Navier Stokes equations which describes the flow of fluids inside a defined flow geometry. CFD offers a powerful design and investigative tool to process engineers. CFD has wide applications in the areas of aerospace and nuclear industries backed by the availability of powerful supercomputers. CFD has expanded into other industries such as chemical and petrochemical. It is only in recent years that it has been applied to the food industry, with a limited variety of food related problems being investigated. Its application in Food Technology and Food Processing Engineering would be beneficial for the better understanding of the physical mechanisms that govern the thermal, physical and rheological properties of food materials. The development of CFD packages came from the need to create computer programs of general nature capable of solving these equations for a wide range of geometry and boundary conditions. ····· 1036188045
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Rhodobacter sphaeroides represents one of the best studied members of the group of purple non-sulfur photosynthetic bacteria and serves as an excellent model for the study of the complex and versatile metabolic capabilities of this group of organisms. The ability of R. sphaeroides to produce large amounts of hydrogen gas (H2), polyhydroxybutyrate (PHB) and fatty acids photoheterotrophically, as well as its ability to utilize atmospheric carbon dioxide (CO2) as a carbon source during photoautotrophic growth, make it an excellent candidate of potential use in a wide variety of biotechnological applications including sustainable biofuel production. To effectively harness its biotechnological potential, a thorough understanding of its metabolic capabilities is necessary, the first step of which is quantitatively analyzing the electron fate of reducing power under steady state continuous cultures. The data is then used for quantitative assessment of genome-scale metabolic network model for R. sphaeroides strain 2.4.1. Eventually, genome-level understanding of its metabolic capabilities will help realize this particular organism`s biotechnological potential. ····· 1036187913
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Bridges are very important and crucial means of transport of fast growing cities, and are especially famous for crossing waterways. While the design for hydraulic and structural considerations is important to maintain a safety environment, the uncertainties of hydraulic predictions may often lead to overdosing resulting in additional costs, or possible failure. The most common cause of bridge failures is the local scour located around bridge piers it is also great danger during floods and in the event of major environmental crises. It is important for the designer of the bridge foundation to understand the local scour phenomenon as this explains the maximum possible scours around bridge piers and abutments in order to create a safe and economic design. This research-study validates and explains a 3D computational fluid dynamic model(SSIIM) for local scours, by changing the pile numbers and spacing of pile groups for both the longitudinal and the transversal directions and comparing the scour hole depth for each case to have a better understanding for the effect of the pile groups arrangements on the scour around bridge piers. ····· 1036187734
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Professional design and development of an optimized and functional Mechatronic system, needs a multi step design process, including problem definition, benchmarking, conceptual and detailed design of mechanical system, motion and structural analysis, conceptual and detailed design of electronic architecture, development, assembly, calibration, test, and modifications. In this book, the author describes all of these steps for development of an industrial pole climbing robot for inspection of piping in oil, gas and petrochemical plants. Several conceptual designs are proposed, and according to the designed benchmark, the best concept for the goals of the project is introduced. Afterwards all steps of a systematic design of a Mechatronic system is described in detail. In addition to researchers who work on mobile robots, this book can be used as an example for students who wants to learn systematic design of Mechatronic systems. ····· 1036187705· 1 · ::::: · 9 ·· 10 ·· 11 ·· 12 ·· 13 ·· 14 ·· 15 · ::::: · 17 ·
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